| Country | Chess tournament name | Start | End |
|---|---|---|---|
 |
Ontario Youth Chess Championship 2025 - U12 Girls | 2025-05-10 | 2025-05-11 |
|
Ontario Youth Chess Championship 2025 - U14 Girls | 2025-05-10 | 2025-05-11 |
|
Ontario Youth Chess Championship 2025 - U18 - U16 | 2025-05-10 | 2025-05-11 |
|
Ontario Youth Chess Championship 2025 - U12 | 2025-05-10 | 2025-05-11 |
|
Ontario Youth Chess Championship 2025 - U14 | 2025-05-10 | 2025-05-11 |